Random Flashcards
Reduction
When gaining an electron
Ionic bonding
The electromagnetic attraction between oppositely charged ions
Ionic
Metal and non-metal
Covalent
Non metal and nonmetal
Metallic
Metal and metal
Covalent
Venn diagram
Covalent
Electrostatic attraction between the positive nuclei and shared negative electrons
Why is graphite slippery
- each carbon bonds to other carbons
- the layers can slide over each other
- because there is no covalent bonds between the layers
- this means they are slippery
Metallic
Very good conductors of heat and electricity
Shape of metallic
Giant lattice
Why is metal good conductor
Because it is in a giant lattice with delocalised electrons that vibrate to pass the heat
Polyethylene
Plastic bottle
Polypropane
Kettle
Reactivity series
Potassium Sodium Calcium Magnesium Aluminium Zinc Iron Tin Lead Copper Silver Gold Potassium
Methane
CH
4
Ethane
C H
2 6
Propane
C H
3 8
Butane
C H
4 10
Pentane
C H
5 12
Hexane
C H
6 14
Test for oxygen
Glowing splint relights
Test for hydrogen
Squeaky pop
Test for Co
2
Like water turns cloudy
Finding oxygen in air
Gas syringe
Oxygen reacts with the copper measurement left is the amount of oxygen
Finding Co
2
Co2 is heated this expands and bubbles collect in test tube -> Co2 in test tube is the amount of Co2
Distillation
Distillation is a process of separating the component substances from a liquid mixture by selective evaporation and condensation
Ball and tube collecting black yuck
Filtration
Filter paper
the action or process of filtering something.
“small particles are difficult to remove without filtration”
Periodic table
Gets less reactive as go down |
\/
Evaporation
Salt crystals left once water evaporates
What’s in air
Nitrogen - 78%
Oxygen - 21%
Co2 - 0.04%
Argon - 1%
Oxidation
When an atom loses an electron
Name the iron compound present in rust
Hydrated iron oxide
Name the 2 substances iron reacts with when it rusts
Water
Oxygen
What type of reaction occurs in the rusting of iron
Oxidation
What is the name of the metal that is used in galvanising iron
Zinc
Identify and object that is suitable for galvanising
Bucket
12
C
6
Top : atomic mass
Bottom: atomic number
35.5
Cl
17
Why isn’t relative atomic mass a whole number
Due to the presence of isotopes
Protons and electrons are
Equal amounts
Isotopes of an element are atoms with the same
number of protons but with different number of electrons
